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13 Commits

Author SHA1 Message Date
Andreas Rheinhardt
c9b44a79d1 avcodec/rasc: Fix potential use of uninitialized value 
Fixes Coverity issue #1439566.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-10-07 11:34:20 +02:00
Andreas Rheinhardt
2934a4b9a5 Remove unnecessary avassert.h inclusions 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2021-07-22 15:02:30 +02:00
Andreas Rheinhardt
a247ac640d avcodec: Constify AVCodecs 
Given that the AVCodec.next pointer has now been removed, most of the
AVCodecs are not modified at all any more and can therefore be made
const (as this patch does); the only exceptions are the very few codecs
for external libraries that have a init_static_data callback.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
 2021-04-27 10:43:15 -03:00
Andreas Rheinhardt
74bffc00c5 avcodec: Constify some AVPackets 
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 2021-03-09 13:41:22 +01:00
Michael Niedermayer
380a3a0adf avcodec/rasc: Check frame before clearing 
Fixes: null pointer dereference
Fixes: 27737/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5769028685266944

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2021-01-08 18:08:56 +01:00
Michael Niedermayer
17603094d5 avcodec/rasc: Check input size in decode_fint() 
Fixes: Timeout (11sec -> 42ms)
Fixes: 18287/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5637866331308032

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-11-09 16:02:43 +01:00
Michael Niedermayer
9f4af97aff avcodec/rasc: Move ff_get_buffer() after frame checks 
If the frame1/2 checks fail this avoids doing the allocation of a new frame

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-01-31 00:24:38 +01:00
Michael Niedermayer
f4079d5174 avcodec/rasc: Check uncompressed dlta size 
We assume that if the compressed size is bigger than if each byte is encoded in a single raw packet
that the data is invalid.

Fixes: Out of memory
Fixes: 12208/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5648916473708544

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-01-31 00:24:38 +01:00
Michael Niedermayer
092cb17983 avcodec/rasc: Check that the number of moves is less than or equal the number of pixels 
Fixes: OOM
Fixes: 10307/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5393974559244288

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-12-16 09:49:07 +01:00
Michael Niedermayer
52ba824c65 avcodec/rasc: Check input space before reading chunk 
Fixes: Timeout
Fixes: 11118/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5652564066959360

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-12-14 23:24:20 +01:00
Michael Niedermayer
f515c978f6 avcodec/rasc: unref both frames on reinit 
Fixes: integer overflow
Fixes: inconsistent frame dimensions
Fixes: 10454/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5656301162463232

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-10-03 11:14:40 +02:00
Michael Niedermayer
9a9034958a avcodec/rasc: Fix off by 1 error in vertical coordinate 
Fixes: out of array read
Fixes: 10311/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-4856330905452544

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-10-03 11:14:17 +02:00
Paul B Mahol
a5278b672a avcodec: add RemotelyAnywhere Screen Capture decoder 2018-09-08 15:59:10 +02:00